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IspG-catalyzed positional isotopic exchange in methylerythritol cyclodiphosphate of the deoxyxylulose phosphate pathway: mechanistic implications.

ABSTRACT: H(2)(18)O under the bridge: Recently, the deoxyxylulose phosphate (DXP) pathway was discovered to be a second pathway supplying isoprenoid biosynthetic precursors. One of steps is an IspG-catalyzed reductive deoxygenation of methylerythritol cyclodiphosphate (MEcPP) to 4-hydroxyl-3-methyl-2-(E)-1-diphosphate (HMBPP). Using [2-(13) C,(18) O]-MEcPP, we detected the positional isotopic exchange for the bridging oxygen in MEcPP.

SUBMITTER: Xiao Y

PROVIDER: S-EPMC3257810 | biostudies-literature | 2011 Mar

REPOSITORIES: biostudies-literature

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IspG-catalyzed positional isotopic exchange in methylerythritol cyclodiphosphate of the deoxyxylulose phosphate pathway: mechanistic implications.

Xiao Youli Y Rooker Debra D You Quincy Q Meyers Caren L Freel CL Liu Pinghua P

Chembiochem : a European journal of chemical biology 20110126 4

H(2)(18)O under the bridge: Recently, the deoxyxylulose phosphate (DXP) pathway was discovered to be a second pathway supplying isoprenoid biosynthetic precursors. One of steps is an IspG-catalyzed reductive deoxygenation of methylerythritol cyclodiphosphate (MEcPP) to 4-hydroxyl-3-methyl-2-(E)-1-diphosphate (HMBPP). Using [2-(13) C,(18) O]-MEcPP, we detected the positional isotopic exchange for the bridging oxygen in MEcPP. ...[more]

PMID: 22238143

Similar Datasets

The deoxyxylulose phosphate pathway of isoprenoid biosynthesis: studies on the mechanisms of the reactions catalyzed by IspG and IspH protein.

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